"We remain concerned about these illegal disclosures and about concerns and risks to individuals," she said.

The New York Times reported that the latest dump of 133,887 confidential and secret documents included many containing the names of sensitive sources who could be at risk of reprisals if they were known to be talking to US diplomats.

In a message on its Twitter page, however, WikiLeaks said it was "totally false" that any of its "sources have been exposed or will be exposed."